555786651121 has 9 divisors (see below), whose sum is σ = 601838643531. Its totient is φ = 513024885672.

The previous prime is 555786651103. The next prime is 555786651131. The reversal of 555786651121 is 121156687555.

The square root of 555786651121 is 745511.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 82216960225 + 473569690896 = 286735^2 + 688164^2 .

It is not a de Polignac number, because 555786651121 - 2¹⁷ = 555786520049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555786651131) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9662970 + ... + 9720316.

Almost surely, 2^555786651121 is an apocalyptic number.

555786651121 is the 745511-st square number.

555786651121 is the 372756-th centered octagonal number.

It is an amenable number.

555786651121 is a deficient number, since it is larger than the sum of its proper divisors (46051992410).

555786651121 is an frugal number, since it uses more digits than its factorization.

555786651121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114720 (or 57360 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 52.

The spelling of 555786651121 in words is "five hundred fifty-five billion, seven hundred eighty-six million, six hundred fifty-one thousand, one hundred twenty-one".